1 files changed, 104 insertions, 0 deletions
diff --git a/libparsepcf_preparse_font.c b/libparsepcf_preparse_font.c
new file mode 100644
index 0000000..5874b50
--- /dev/null
+++ b/libparsepcf_preparse_font.c
@@ -0,0 +1,104 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+
+int
+libparsepcf_preparse_font(const char *file, size_t size, struct libparsepcf_font *font)
+{
+	size_t min = SIZE_MAX, max = 0, table_i, table_n;
+	struct libparsepcf_table *tables = NULL;
+
+	if (libparsepcf_get_table_count(file, size, &table_n))
+		goto fail;
+	tables = calloc(table_n, sizeof(*tables));
+	if (!tables)
+		goto fail;
+	if (libparsepcf_get_tables(file, size, tables, 0, table_n))
+		goto fail;
+
+	for (table_i = 0; table_i < table_n; table_i++) {
+		if (tables[table_i].type == LIBPARSEPCF_PROPERTIES) {
+			font->prob_table = &tables[table_i];
+			if (libparsepcf_get_properties(file, size, &tables[table_i], &font->props))
+				goto fail;
+		} else if (tables[table_i].type == LIBPARSEPCF_ACCELERATORS && !font->accel_table) {
+			font->accel_table = &tables[table_i];
+			if (libparsepcf_get_accelerators(file, size, &tables[table_i], &font->accels))
+				goto fail;
+		} else if (tables[table_i].type == LIBPARSEPCF_BDF_ACCELERATORS) {
+			font->accel_table = &tables[table_i];
+			if (libparsepcf_get_accelerators(file, size, &tables[table_i], &font->accels))
+				goto fail;
+		} else if (tables[table_i].type == LIBPARSEPCF_METRICS) {
+			font->mtx_table = &tables[table_i];
+			if (libparsepcf_get_metrics_count(file, size, &tables[table_i], &font->metrics))
+				goto fail;
+		} else if (tables[table_i].type == LIBPARSEPCF_INK_METRICS) {
+			font->inkmtx_table = &tables[table_i];
+			if (libparsepcf_get_metrics_count(file, size, &tables[table_i], &font->ink_metrics))
+				goto fail;
+		} else if (tables[table_i].type == LIBPARSEPCF_BDF_ENCODINGS) {
+			font->enc_table = &tables[table_i];
+			if (libparsepcf_get_encoding(file, size, &tables[table_i], &font->encoding))
+				goto fail;
+		} else if (tables[table_i].type == LIBPARSEPCF_BITMAPS) {
+			font->bitmap_table = &tables[table_i];
+			if (libparsepcf_get_bitmaps(file, size, &tables[table_i], &font->bitmaps))
+				goto fail;
+		} else if (tables[table_i].type == LIBPARSEPCF_GLYPH_NAMES) {
+			font->name_table = &tables[table_i];
+			if (libparsepcf_get_glyph_names(file, size, &tables[table_i], &font->names))
+				goto fail;
+		} else if (tables[table_i].type == LIBPARSEPCF_SWIDTHS) {
+			font->swidth_table = &tables[table_i];
+			if (libparsepcf_get_swidth_count(file, size, &tables[table_i], &font->swidths))
+				goto fail;
+		}
+	}
+
+	if (font->mtx_table) {
+		if (font->metrics < min)
+			min = font->metrics;
+		if (font->metrics > max)
+			max = font->metrics;
+	}
+	if (font->inkmtx_table) {
+		if (font->ink_metrics < min)
+			min = font->ink_metrics;
+		if (font->ink_metrics > max)
+			max = font->ink_metrics;
+	}
+	if (font->bitmap_table) {
+		if (font->bitmaps.glyph_count < min)
+			min = font->bitmaps.glyph_count;
+		if (font->bitmaps.glyph_count > max)
+			max = font->bitmaps.glyph_count;
+	}
+	if (font->name_table) {
+		if (font->names.glyph_count < min)
+			min = font->names.glyph_count;
+		if (font->names.glyph_count > max)
+			max = font->names.glyph_count;
+	}
+	if (font->swidth_table) {
+		if (font->swidths < min)
+			min = font->swidths;
+		if (font->swidths > max)
+			max = font->swidths;
+	}
+
+	if (min != max || !font->mtx_table)
+		goto ebfont;
+	if (!font->inkmtx_table && font->accel_table && font->accels.ink_metrics)
+		goto ebfont;
+	font->glyph_count = min;
+	font->_tables = tables;
+
+	return 0;
+
+ebfont:
+	errno = EBFONT;
+fail:
+	free(tables);
+	return -1;
+}